Identify the smallest prime number.
Aptitude
Numbers
Difficulty: Easy
Choose an option
-
A0
-
B1
-
C2
-
D3
Answer
Correct Answer: 2
Explanation
Given data
- Definition: a prime has exactly two distinct positive divisors, 1 and itself.
Reasoning
0 is not prime. 1 has only one positive divisor, so not prime.2 has divisors {1, 2} only and is the least such integer.Therefore the smallest prime is 2.
Common pitfalls
- Thinking 1 is prime. It is not by modern definition.
Final Answer
2